122111144 has 8 divisors (see below), whose sum is σ = 228958410. Its totient is φ = 61055568.

The previous prime is 122111131. The next prime is 122111149. The reversal of 122111144 is 441111221.

It can be written as a sum of positive squares in only one way, i.e., 69722500 + 52388644 = 8350^2 + 7238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×122111144² = 29822262977977472, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (122111149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7631939 + ... + 7631954.

Almost surely, 2^122111144 is an apocalyptic number.

It is an amenable number.

122111144 is a deficient number, since it is larger than the sum of its proper divisors (106847266).

122111144 is a wasteful number, since it uses less digits than its factorization.

122111144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15263899 (or 15263895 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 122111144 is about 11050.3911242996. The cubic root of 122111144 is about 496.1181321987.

Adding to 122111144 its reverse (441111221), we get a palindrome (563222365).

The spelling of 122111144 in words is "one hundred twenty-two million, one hundred eleven thousand, one hundred forty-four".